Workout & nutrition trackingLog training and meals and watch your progress add up.
Challenges & duelsDaily challenges and head-to-head duels to keep you honest.
Leagues & recordsClimb the weekly league and set new personal records.
Everything you train for, in one app
Log every session and meal, watch your numbers climb, and turn the work into points, duels, and a weekly league.
Free for everyone.
Every feature, for every member — free, always. No upgrades, no premium plan, no tiers, ever.
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How members could describe it
Sample testimonials — real member stories coming soon.
Logging is fast enough that I actually keep it up. Seeing the weekly numbers climb is what keeps me showing up.
The duels with my training partner are ridiculous — in the best way. I’ve never been this consistent.
Having workouts and nutrition in one place finally made the whole picture make sense.
Questions, answered
Is Centennial Fitness really free?
Yes — every feature is free, forever, with no credit card required. Just create an account and start logging.
Do I need any equipment or a wearable?
No. You can log everything by hand. If you have a device that tracks heart rate, sleep, or HRV you can connect it for extra insight, but it’s optional.
What do you do with my health and fitness data?
It’s yours. Your data is encrypted in transit and at rest, and you control what you share with friends or a coach. See our Security and Health & Fitness Data pages.
Does it work on my phone and my laptop?
Yes — Centennial Fitness runs on the web and as a mobile app, and your training stays in sync across both.